claat/render: correct header level in markdown rendering
claat/render: correct header level in markdown rendering

chrisrecher/tools,Qwiklabs/codelab-tools,CloudVLab/tools,CloudVLab/tools,googlecodelabs/tools,chrisrecher/tools,Qwiklabs/codelab-tools,Qwiklabs/codelab-tools,googlecodelabs/tools,googlecodelabs/tools,googlecodelabs/tools,Qwiklabs/codelab-tools